michael@0: //* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
michael@0: /* This Source Code Form is subject to the terms of the Mozilla Public
michael@0:  * License, v. 2.0. If a copy of the MPL was not distributed with this
michael@0:  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
michael@0: 
michael@0: #ifndef nsCheckSummedOutputStream_h__
michael@0: #define nsCheckSummedOutputStream_h__
michael@0: 
michael@0: #include "nsILocalFile.h"
michael@0: #include "nsIFile.h"
michael@0: #include "nsIOutputStream.h"
michael@0: #include "nsICryptoHash.h"
michael@0: #include "nsNetCID.h"
michael@0: #include "nsString.h"
michael@0: #include "../../../netwerk/base/src/nsFileStreams.h"
michael@0: #include "nsToolkitCompsCID.h"
michael@0: 
michael@0: class nsCheckSummedOutputStream : public nsSafeFileOutputStream
michael@0: {
michael@0: public:
michael@0:   NS_DECL_ISUPPORTS_INHERITED
michael@0: 
michael@0:   // Size of MD5 hash in bytes
michael@0:   static const uint32_t CHECKSUM_SIZE = 16;
michael@0: 
michael@0:   nsCheckSummedOutputStream() {}
michael@0:   virtual ~nsCheckSummedOutputStream() { nsSafeFileOutputStream::Close(); }
michael@0: 
michael@0:   NS_IMETHOD Finish();
michael@0:   NS_IMETHOD Write(const char *buf, uint32_t count, uint32_t *result);
michael@0:   NS_IMETHOD Init(nsIFile* file, int32_t ioFlags, int32_t perm, int32_t behaviorFlags);
michael@0: 
michael@0: protected:
michael@0:   nsCOMPtr<nsICryptoHash> mHash;
michael@0:   nsAutoCString mCheckSum;
michael@0: };
michael@0: 
michael@0: // returns a file output stream which can be QI'ed to nsIFileOutputStream.
michael@0: inline nsresult
michael@0: NS_NewCheckSummedOutputStream(nsIOutputStream **result,
michael@0:                               nsIFile         *file,
michael@0:                               int32_t         ioFlags       = -1,
michael@0:                               int32_t         perm          = -1,
michael@0:                               int32_t         behaviorFlags =  0)
michael@0: {
michael@0:     nsCOMPtr<nsIFileOutputStream> out = new nsCheckSummedOutputStream();
michael@0:     nsresult rv = out->Init(file, ioFlags, perm, behaviorFlags);
michael@0:     if (NS_SUCCEEDED(rv))
michael@0:       NS_ADDREF(*result = out);  // cannot use nsCOMPtr::swap
michael@0:     return rv;
michael@0: }
michael@0: 
michael@0: #endif